URL Encoder & Decoder
Instant • Secure • 100% Offline • Nothing Leaves Your Device
When You'll Need URL Encoding
Building Query Strings
Safely pass search terms, filters, or user input in URLs without breaking links.
API Requests
Properly encode parameters when calling REST APIs, webhooks, or third-party services.
Sharing Links
Convert spaces, &, ?, # and special characters so links work everywhere.
Fixing Broken URLs
Decode malformed or double-encoded URLs to see the original text.
International Text
Encode emojis, accents, Cyrillic, Chinese, Arabic — all supported perfectly.
Debugging & Testing
Quickly test how browsers and servers interpret encoded vs decoded data.
Frequently Asked Questions
URL encoding (percent-encoding) converts special characters into % followed by their hexadecimal code so they can be safely transmitted in URLs.
Spaces and many symbols break URLs. They must be replaced (space becomes %20 or +) to comply with web standards.
Yes! All encoding/decoding happens in your browser using JavaScript. No data is sent to any server.
Absolutely. Modern encodeURIComponent() properly handles Unicode including emojis.
This tool uses encodeURIComponent() — safer for query parameters. encodeURI() leaves & ? = unescaped.
Yes! Bookmark or add to home screen — works forever without internet after first load.